Possible Clues:

• Prince holds member of insurgency which is growing in the country
• Needed to quash a rebel leader, you may see me occupying northern forests
• Bloomer made by insurgent captured by Harry
• Revolting type enters half-cut, making a bloomer
• In church a rebellious choirboy makes a bloomer
• Rush — something that might be tubular heathland plant
• Henry's taken over revolt in plant
• Blue-flowered perennial
• Plant a resistance fighter in the outskirts of Hull
• Bloomer which a rebel leader conceals